SU-RV explosion-proof mine control station
Main station types according to downstream equipment:
-
Compact station with an automatic circuit breaker and a lighting transformer to control a shearer, a face machine, and a cooling plant
-
Compact station with an automatic circuit breaker to control a shearer and a cooling plant
-
Compact station with a transformer (P=40kVA, U=1140/660V) to control face conveyors and gate conveyors
-
Compact station to control face conveyors and gate conveyors
-
Compact station to control stowage complexes
Station circuitry provides:
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Power contactors engagement/disengagement by a preset algorithm
-
Power contactors engagement/disengagement with de-energized power circuit (testing)
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Compatibility with remote controls
-
Intrinsically safe inputs for external control circuits
-
Intrinsically safe outputs for power contactor status signals
In addition to the control functions, the circuitry of the station provides:
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Short-circuit current protection of power branches
-
Overcurrent protection of power branches
-
Overheating protection of downstream equipment
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Remote control circuit fault or short-circuit protection
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Prevention of self-engagement at 150% of rated voltage
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Protection against branch ground circuit failure or resistance buildup over the allowable value
-
Branch interlock in case of external line-to-ground insulation fault or drop below the allowable level
-
Current leakage protection in internal 220V power lines
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No-voltage protection
-
Mains power indication
-
Tripping event indication
-
Branch line engagement indication
-
Protection testing
Environment conditions
Underground excavations at mines, shafts and their surface buildings with the ambient of hazardous gas and/or combustible dust
Category I explosive mixture (methane at underground works) ambient or corrosive salty dust ambient
UKhL (temperate and cold) climatic version, location category 5
Ambient temperature: minus 10°C to +40°C
Relative humidity: (98±2)% at (35±2)°C
Dust concentration in air: max. 1600 mg/m3
Main performance specifications
|
Property |
Value |
|---|---|
|
Rated feed voltage, V |
1140/1000/660 |
|
AC mains frequency, Hz |
50 |
|
Automatic circuit breaker rating, A |
1250 |
|
Branch line insulation control unit adjustment range, kΩ |
10...130 |
|
Branch line current leakage control unit adjustment range, kΩ |
10...130 |
|
Power circuit current leakage trip time adjustment range, s |
0.1...0.5 |
|
Ex rating |
РВ Ex db [iа Ма] I Мb Х |
|
Enclosure protection rating |
IР54 |
|
Duty modes: |
|
|
Continuous |
S1 |
|
Short-time |
S2 |
|
Intermittent |
S3 |
|
Weight, kg |
13000 |
